Outer Drive Bridge, Double-deck bascule bridge in downtown Chicago, United States.
The Outer Drive Bridge is a double-deck bascule structure spanning the Chicago River with a double-leaf mechanism that allows both upper and lower decks to lift for vessel passage. The span carries traffic on DuSable Lake Shore Drive while also serving pedestrians and cyclists on the Chicago Lakefront Trail.
Construction began in 1929 and was completed in 1937 as part of public works programs during the Great Depression. The project represented one of many infrastructure initiatives undertaken to provide employment during that economic crisis.
The bridge carries the name Franklin Delano Roosevelt Memorial Bridge, adopted in 1982 to honor the centennial of the president's birth. This designation reflects how the structure symbolizes the era when it was built.
The bridge lifts regularly to allow boat traffic through, so expect possible delays during passage if vessels are moving. Pedestrians and cyclists can use the dedicated trail on the span, which offers good views while crossing the Chicago River.
On its opening day, the bridge managed to process enormous vehicle volumes despite logistical challenges with initial operations. This early performance demonstrated how critical the structure would become for the city's traffic network.
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